Crossword Genius

Grave situation's beginning: euro is destabilised (7)

Ross

I believe the answer is:

serious

I'm a little stuck... Click here to teach me more about this clue!

'grave' is the definition.
(I know that grave can be written as serious)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for serious that I've seen before include "Not light or frivolous" , "Important -- grave" , "Important - solemn" , "Earnest; vital" , "Solemn, thoughtful" .)

I've seen this clue in The Sun.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.